Register resetting means



Nov. 11, 1952 H. GANG 2,617,594

REGISTER RESETTING MEANS Filed Nov. 8, 1949 6 Sheets-Sheet lnnuunnuunnhmnu Eu 6 monsoon 1:2 8 8v 6% +13 ISnventor HERMAN GANGattorneg Nov. 11, 1952 H. GANG REGISTER RESETTING MEANS 6 Sheets-Sheet 2Filed Nov. 8, 1949 Bnuentor HERMAN GANG attorney Nov. 11, 1952 H. GANGREGISTER RESETTING MEANS 6 Sheets-Sheet 3 Filed Nov. 8, 1949 IinventorHER MA N GAN 6 Z (Iflorncg Nov. 11, 1952 H. GANG REGISTER RESETTINGMEANS 6 Sheets-Sheet 4 Filed NOV. 8, 1949 Nov. 11, 1952 H. GANG2,617,594

REGISTER RESETTING MEANS Filed Nov. 8, 1949 s Sheets-Sheet 5 INVENTOR AORNEY HERMAN GANG Nov. 11, 1952 H. GANG 2,617,594

REGISTER RESETTING MEANS Filed Nov. 8, 1949 6 Sheets-Sheet 6 HERMAN GANGan L0 attorney Patented Nov. 11, 1952 REGISTER 'RESETTING' MEANS HermanGang, Livingston;N. '.I.,' assignor to'Monroe Calculating MachineCompany, Orange, N. J a corporation of Delaware Application November 8,1949, Seria-lNo.'126',157

9 Claims.

The invention relates to register resetting means for calculatingmachines and, more particularly, to means controlling the operationof aplurality of resetting mechanisms in association with a plurality ofregisters.

In the performance of certain work entailing a series of calculations,it is essentialto register individually the result of each calculation,and also the sum or grand total of the series. To this end, calculatingmachines are customarily provided with a pair of registers which maybeadapted for the simultaneous registration of an amount resultant of acalculation. By the usual provision of individually operable resettingmechanisms, one of the registers may be cleared while the registrationsare'retained in the "other. Thus, a series of calculations may beperformed with individual registration of each one of. the series in theone register and the-sum or grand total accumulated in the other. Uponcompletion of the work, both registers may be cleared by the individualand unrelated operation of the respective resetting mechanisms.

In many calculations of the type defined above, it is desirable toaccumulate in the grandtotal register the sum of the individualregistrations including only a given number of decimal orders. To efiectthis, the grand total register may be provided with a split clearingarrangement whereby resetting mechanism is operable.

to reset only the numeral wheels to'the. right of a given denominationalorder after cachindividual registration. Inother calculationsfor examplein payroll work, it is'desirable tocomplete the calculations to thenearest half cent. To provide for this, one of the wheels of each of theregisters may be adapted for resetting to five instead of to zero 30that a half cent or more registered in the wheel will elfect a tenstransfer to the next higher order wheel and thereby add a full count tothat wheel. This arrangement necessitates the resetting in the grandtotal register of the sooalled half cent wheel and all of the wheels tothe right'thereof after each individual registration of a series ofcalculations. This will be apparent when it is considered that a correctgrand total will be registered only if each individual registration isefiected with the half cent wheel so set as to effect a tens transferupon registration therein tion as in the instance noted inconnection'with unwanted decimal accumulation.

The present invention-provides improved. control 'means for effectingselective operation of 'resettin'gmechanisms'for a pair of registers andto thereby re'ducethe number of operations required to effect thedesired resetting of the registeras, for example, in calculations of thetype outlined above. The-arrangement is such that resetting mechanismfor one of the'registers has operating connection with a power sourcewhereby depression'of an operatingmembensuch as "a key, will invariablyeffectthe' resettingoperation. Theother i (grand-total) register isprovided with individual resetting mechanisms; one for resetting agiven'number of the lower. order wheels'and another for resetting thehigher'order'wheels. 'Manuallyadjustable.means in associationwith-adrive train from the power source provide thecontrol meanswherebythe desired operations of the resetting mechanisms for the grandtotal register are efiected in conjunction with the resetting of theother register. The invention, however,- will best-be understood. fromthe'following 'description'with reference to the accompanying drawingsin which:

Fig. 1 isa plan-view of a calculating machine embodying the invention;

Fig. 2 is a left side elevation of the machine showing the resettingclutch and' related linkage.

Fig. 3 is a vertical section through the machine showing thesub-total-and grand total 'carriages in elevation.

Fig. 4'isa fragmentary partlyexploded'perspectiveshowing the resettingclutch and various connections for effecting the resettingoperations.

Fig.5 is a detailed.sideelevationof one of the. register numeral wheelsanda unit of the resettingv mechanism related thereto.

Fig. 6. is an explodedv fragmentary perspective with parts in section ofthegrand total carriage "and the resettingpower transmissions therefor.

Fig.7 is a-detailed section of a portion of one of the powertransmission-:trains.

Fig. 8 is 1 a: fragmentary perspective of 1 the grand total carriage andcontrols relatedthereto as viewed "from. the rear of the machine.

The invention is disclosed as embodied ina non-listing calculatingmachine capable of performing the four rules of arithmeticsubstantiallyas disclosed in Patent No. 2,531,207," issued to me onNovember 21, 1950. The machine is provided with a dividend-productregister comprising the'numeral'wheels 13 (Figs. 1 and-3)'and-'hereinafter termed the sub-total register,

and a grand total register comprising the numeral wheels l3a.

Sub-total wheels is are mounted in 2. Iongitudinally shiftable carriage2 which is pivotally mounted at its rear on rockable splined shafts 459and 460 (Figs. 2 and 3). At their outer ends, shafts 459 and 460 havepivotal bearing in the left and right end plates respectively ofcarriage 2 and extend inwardly in axial alignment with their inner endsjuxtaposed and pivotally contained in a suitable bearing (not shown) inand midway of the length of the car.- riage in accordance with thedisclosure of my aforenoted Patent No. 2,531,207. Intermediate theirends, shafts 459 and 4B!) are pivotally and slidably mounted in suitablehearings in the left and right side frames respectively of the machine.Shafts 459 and 460 are accordingly adapted to be rocked independentlyand the slidable mounting of the shafts in the machine frame permits thelongitudinal shifting of the carriage.

Grand-total wheels l3a are mounted in a carriage 2a (Figs. 1, 2 and 3)which is located to the rear of and is simultaneously and coextensivelyshiftable with carriage 2. Carriage 2a is pivotally mounted at its underside on a splined shaft 20 which extends between the end plates of thecarriage 2a. Intermediate its ends, shaft 2% is pivotally and slidablymounted in suitable bearings in the left and right hand side framesrespectively of the machine. The slidable mounting of shaft 20accordingly permits longitudinal shifting of carriage 2a. To provide forsimultaneous and coextensive shifting of carriage 2a.

with carriage 2,"the end plates 21 (Figs. 2 and 3) of carriage 2a areprovided with forwardly extending fingers 2m which engage the end platesrespectively of carriage 2. Therefore, when carriage Z is shifted, themovement will be directly transmitted to one or the other of fingers 2lato likewise shift carriage 2a.

Actuating mechanism comprising the differential actuators 5 (Fig. 3) andthe tens transfer actuators I! are provided for the sub-total wheels l3.Grand-total wheels 13a are likewise provided with actuating mechanismcomprising the differential actuators 5a, and the tens transferactuators Ila. Selection mechanism comprising selector bails 9 (Fig. 3)have operating connections with both differential actuators 5 and 5a tothereby adjust said actuators in accordance with values set in keyboardl when upon depression of keys l8. A suitable gear train (not shown)connects actuators a and Ila, at a one to one ratio with a drive meansfor actuators 5 and H and thereby provides, upon each cycle ofoperation, for simultaneous registration in Wheels 13 and We of a valueset in the keyboard.

Drive means for the actuating means, carriage shifting means, and drivemeans for the latter may be provided substantially in accordance withthe disclosure of Patent No. 2,419,766, issued April 29, 1947, to E. F.Britten, in which a clutch mechanism is shown for driving the actuatingmechanism or alternatively the carriage shifting mechanism. Theseoperations, however, bear no relationship to the present invention andany suitable carriage shifting and registering mechanisms may beemployed in a machine embodying this invention. Furthermore, theinvention is not necessarily restricted for use in a machine havingshiftably mounted registers. The above will be apparent when it isconsidered that the invention relates to the control of mechanisms toreset the registers and notto the means whereby the registrations areeffected nor to the shiftability of the registers.

Resetting mechanism The subtotal register comprising the wheels I3 isprovided with an independently operable resetting mechanism, the drivefor which is engaged and controlled substantially as disclosed in PatentNo. 2,531,206, issued to me on November 21, 1950, to which reference ismade for details of construction. The arrangement is such. thatdepression of a key 46'! (Figs. 1 and 4) will. be effective to move aslide 479 toward the left of .the' machine. The movement of the slide iseffective to engage a clutch 464 (Figs. 2 and. 4) and connect a drivetrain for the resetting; mechanism for sub-total wheels 13. As fullydis-- closed in my aforenoted copending application, keys 465 aud 466and related slides All and 473' (Figs. 1 and 3) are provided to controlthe opera-- tion of clutch 464 to reset numeral wheels of the multiplierquotient register and to clear. keyboard I0 respectively. The presentinvention. however, relates only to the operation of re-- settingmechanisms associated with the sub-total and grand-total registers, andtherefore the op-- eration of clutch 464 will be considered only in thatconnection.

Key 461 (Fig. 4) is held in normal raised position by a suitable springand the lower end of the key stem is pivotally connected to the forwardend of a lever 41! which is fulcrumed at its rear to the framing of themachine. Lever 4' is provided with a depending arm which terminates in ahorizontally disposed finger 4H which is positioned to contact an arm ofa bell crank 415. Bell crank 475 is fulcrumed on a fixed shaft 416 andits other arm is pivotally con nected to slide 419 which extends acrossthe machine. Thus, depression of key 461 will rock lever "I clockwise,move slide 419 to the left, which slide is in engagement with car 482',and thereby releases latch 482. Latch 482 is normally in engagement witha slide 43!) slidably supported at its forward end on a shaft 484 tohold said slide in rearward position against the tension of a spring 48Itending to move slide 48!) forward' Thus, movement of slide 419 willrelease slide 480 for forward movement. The leftmost end of slide 419 isprovided with a recess in its rearward edge and when said slide is movedto its left or active position, the forward end of released slide 480will enter said recess and hold slide 479 in active position until theengaging end of slide 480 has been removed.

Resetting clutch 454 is driven by a suitable gear train from theelectric motor and is of Wellknown construction in which a spring pawlmounted on the driven member of the clutch is held out of engagementwith the driving member by a detent... For this purpose, a detent 48!(Figs. 2 and 4) is fixed on a shaft 486 rotatably mounted in the'leftside frame. Shaft 485 has an arm 485 fixed thereto which arm ispivotally connected to the rear end of slide 48% Accordingly, when slideM32 is released and moved forwardly, the shaft 485 through arm 485 willbe rocked counterclockwise, thus removing detent 481 from engagementwith the pawl of clutch 464, thereby engaging the drive to the motor.

Upon engagement of clutch 454, the circuit switch contacts for the motormust be closed. For this purpose, a lever 45% (Fig. 2) pivotally mountedon the frame is urged counterclockwise by a suitable spring. Ahorizontally disposed arm driven member of clutch 46 i.

#395 as shown in dotted lines (Fig. 2).

. ofthe lever men 1. 15-111 contacttwithpa ;pinj.209' on a forwardly:extending arm ..;of A a eleven. 299. f Normally, lever; 49!]: is'restrained: from; rotation by a lug-483L011 slide 489. fv'flhenislide480; is

. released:.andumoves forwardly, lever .49fi'willibe movedcounterclockwise 'x by. its. spring: and the arm of lever128G :willibelifted to. close the-circuit switch contact.

In order; that? clutch .54 )(Figs.v21and;4) ,shall make one cycleofoperation and thenube disengaged, provision is made to-returndetent .481.intorpositionito engage the pawlof the clutch before the clutch'hascompleted its cycle. To

this end, detent 43?:is provided with an arm '492, the free end of whichis provided-with a cam face 492. When the detent isdisengaged, the-freeend;of arm 492 willbe moved downwardly; thus-bringing cam face 492' intoposition to be'engaged by apin 493 mounted. on the =As'clutch 1464approaches full cycle position, pin--493-wil1'engage cam face '492',thereby raising arm 492 and moving detent AST-intoposition to engage thepawl of clutch Mid-and disconnect the drive when the clutch reachesfull-cycle-position. As 'detent 4811's "fast on'shaft'485, the-shaftwill be rocked clockwise, thereby rocking arm' i35 with it andmovingslide 436 to therear. Pin

493 of clutch' lfi i will pass under cam face-492,

thereby providing sufficient movement to bring shoulder 459' of slide489 to the rearof latch lever 482. In the rearward movement of slide586, its forward end willbe removed from-the sees: in slide 4'58 andthereby permit spring 483 to move latch 482 into positionto engageshoulder 58d and ear-482 to restore slide'dlfil Slide 489 will thusbepreventedfrom forward movement to reengage clutch 464.

.The operation of.-latch .482 to prevent reengagcment of clutchcfi iwill be effected only if key 46'! is released before the. completion ofthe clutch cycle. .Shouldkey 4B7 be'held .de-

pressed, slide 479 would prevent the engagement of latch 482 with slide459 and reengagement of clutch 454 would be effected. -Although notdesirable, the reengagement of clutchJlM would only result in theoperation oftheresetting .mechanismagain after having performed theresetting function. If itis .desired toprevent this reengagement ofclutch 4B4,-an. auxiliary latch (not shown) may beprovided tooperate inconfixed on rockable shaft 35%- which extends across the machine andexteriorlyof the left side'frarne. Thus, when clutch ABE-is operated,shaft'iilfi is rocked clockwise during the first half cycle and duringthe second half cycle is rocked back to normal.

Slidably mounted on shaft ii l and positioned inwardly of the left sideframe is a rearwardly extending, arm 5613 (Figs; 3 and 4) which isprovided at its end. witha leitwardly extending pin 59%. The hub:portion of arm- 598 is provided vand alever "559.

:with .an open. end. slot .on:fits ;upper.-:side. ..'Io the rightof..arm:5i38:.and:fixed .on sha'ft 484, tisia collar. 5:! flhaving. aleftwardly,extendingarm :5 l0"'which: engages .ztherslot of r arm 508.."Ful- :crumedonzal shaft Mfijis .a' lever .599,athe foriward'r'end ofwhich is: provided with: anopen send slot which; is: normallyito' the i.lft andi in horizontal: alignment withnpin .598 :of:- armt508.

T Slide F 4.19.1. isiprolvided with: a :rearward projection"419'1:havingi an; open: e1id-sl0tzengagingi the hub of arm 598.Therefore;.;up.on::depression' of *keyfifi hand: theresultant?clutchengaging movementvof :slide C419; arm 7. 598 will .rbe:;moved. to the .left and pin 1:558 entered within the. slot at theforward .:end ;of "lever 599; andi thereby-.es-

:tablish a :driving connection between arm 508 When shaft #84: isrocked. by resetting clutch 46.4, 212.1111 e508 -.will :ibe rockedthrough 1thecarm" 51 0' 0flCO113I 5 l ll..and;pin:i508' will beeffectiveto rocklever 599;counterclo'ckwise by raising. its: forward.end.

1The-rearwardrend of r1ever1509 hast-link connection :5I3 .(Figs.;3 ;and14) .withiianarm? 514 fixed'on 1a,- pivotally mounted. shaftv .515zwhich. ex-

' tends between the-machine side iframes, .An-

other arm 5! 5 fixed on shaft 51 5.;is: pivotally. connected at its:end' to the loweriend. ofransupwardly :extendingrlink: 5! l' which.has. a, pivotal connection at: its :upper r end with: an. arm 5 I 2..-Arm;5l2 ris "SDllIlBdDOIll shaft 459 ofacarlriage 2 anduis restrainedfromiateral movement :with'the shaft byga suitablecbearingzintheleftside frame.

. Thus, when. lever: 5991s: rocked:v counterclockwise, shaft-'54 5; willbergrockedrclockwise. .(FigsJ 2 and.-4) :andsplined, shaft- 9 will berockedcounterclockwise byarmfi'tl and link 5| .1. :Adjacentthe innerside; of the "left: end: plate; of; carriage-'2; tan arm "517' (shown.inidotted liIlBS'iiIl FigS.-'2'=a1'id 3) is :fixed. on; shaft 459and-through:suitable linkage 51 8,;cis connected :to" axsquaresshaft :519: which 'extends'the length of the carriageran'dhas suitcable-bearingsthe. carriagezend plates. "Therefore; when shaft 459 isrocked;shaft519will likewise be rocked to operate the resetting-mechanism forwheels. I 3..of' the: subetotalucarriage i.

'fTheT resetting mechanism :may: .berxconstructed v in; accordance with.the structure fiillyLdisclosed in Patent'sNo .1 1',781',320, issued to ILTP; Crosman, on November '11, 1930. It willbe understood,

f howevenzthat other wellknown resetting mechanisms are.equallyapplicable: for. use-in conjunctionrwith theidevices'ofathe:invention. In accordance :with the :disclosure of the aforenotedpatent; each of: the numeral wheels 13 is provided with i a: commonly:known heart-shaped cam f 22 (Fig. 5)::fixedly. mountedon: the hub of thewheel. For operation iii-conjunction with the cams 22,

.atlike number of arms 23 are fixed on -sha'ft- 5 l 9 and each arm isprovided with a member 24 havring 'a'rpair of oppositely disposedfianges fl'. The: arrangement is :such that upon rocking of -shaft5l9oneor the'otherof flanges 24cm each :member5:24:.will engage the cam- 22 ofthe-related -.wheel: l3 and L thereby reset the wheel in -the Vrdirection of the lesser travel. It will be =-seen,

therefore, that a resetting operation for-=wheels 13 of. the sub-total:register 2 --will be effected illvariablyupon' depression-of key-"464.

iManually adjustable means are provided whereby a resetting operationfor the sub-total wheels -i 3 will e'fifect simultaneously aresettingoperation for all of thewheels l3a of the-grandtotal register anduponsuchoperation; automatic means is provided' to'read-just said imanu'almeans so that" depression 0f key 464 'will'thereafter effect only theinvariable operation of the resetting mechanism for sub-total wheels l3.Alternatively, manually adjustable means is also provided whereby aresetting operation for subtotal wheels I3 will effect simultaneously aresetting operation for a portion of the grand-total register comprisinga given series of lower order wheels [3a and thereby prevent theaforenoted unwanted accumulation. Such latter adjustable means isadapted to remain in set position until manually readjusted.

In the achievement of the above-noted resetting operations, individualresetting mechanisms are provided for one and for another portioncomprising respectively a given series of the higher and lower orders ofnumeral wheels l3a of the grand-total register. Each of the individualresetting mechanisms is operable by a power transmission train includingsplined rock shaft 20 (Figs. 2, 3 and 6) of the grand-total register.Shaft 20 is adapted to be rocked each time clutch 464 operates to resetthe wheels 13 of the subtotal register 2. It will be recalled that thedrive train for the resetting mechanism for the subtotal registerincludes a shaft I5 (Figs. 2 and 4) which is rocked in the resettingoperation. Fixed on shaft 515 inwardly of the right side frame is an arm520 having pivotal connection at its end to the lower end of an upwardlyextending link 52!. Link 52l is pivotally connected at its upper end toan arm 522 (Figs. 2 and 6) which is splined on shaft 20 and the hubportion of said arm is rotatably supported and restrained from lateralmovement with the shaft by a suitable bearing in the machine framing.Therefore, in the resetting operation for the sub-total register,splined shaft 20 will be rocked in counterclockwise direction by shaft5I5, arm 523, link 52!, and arm 522.

Individual transmission means is provided to deliver power from splinedshaft 20 for operating the individual grand total resetting mechanismsrespectively. Alternatively, however, the manually adjustable meansprovides that the power transmission for the resetting mechanism for theportion of the register including the higher order wheels 13a may beconnected to operate simultaneously the resetting mechanism for theportion including the lower order wheels. The two power transmissionsinclude the axially aligned and rockable square shafts 523 and 524 (Fig.6) respectively. As clearly illustrated in Fig. 6, shaft 523 is relatedto the higher order portion of wheels I311 and shaft 524 to the lowerorder portion of wheels Isa. Shaft 523 is provided with suitablebearings in the leftmost end plate and the partition plates 525 ofcarriage 2a and is restrained from longitudinal movement by spacingcollars 525 fixed on the shaft between the partition plates. Mounted onshaft 523 and adapted for rocking movement therewith are arms 23 whichoperate resetting members (not shown) for the higher order wheels 13a,and the resetting members are constructed and operated in accordancewith resetting members 24 shown and described in connection with wheelsl3 of the subtotal register.

Shaft 524 is journalled in suitable bearings in the right end plate andthe partition plates 525 of carriage 2a. Unlike shaft 523, however,shaft 524 is adapted for longitudinal movement which is permitted bymounting its spacing collars 526 loosely on the shaft between thepartition plates. Furthermore, shaft 524 is provided with a reducedcylindrical portion 524 for a purpose hereinafter described. Resettingarms 23 are adapted for rocking movement with shaft 524 by the provisionof square openings through which the shaft slidably passes and the armsare prevented from longitudinal movement with the shaft by the spacingcollars 526, Arms 23 rocked by shaft 524 operate resetting members forthe lower order wheels l3a as described in connection with higher orderwheels [3a and wheels l3.

Fixed to the right end of square shaf 523 (Fig. 6) is a cylindricalcoupling member 521 having at its free and projecting end an internalcylindrical recess 523, and at its left end a square recess 529 adjacentthe right end of shaft 523. Slidable shaft 524 is retained in either oftwo positions by a ball and clip device 535 which retains the shaft ineither position to which it is moved by a knob 53l attached to the rightend of the shaft exteriorly of the carriage end plate. In the positionshown in Fig, 6, the left end of slidable shaft 524 is extended a shortdistance into the cylindrical recess 528. In this position, shaft 524 isallowed free and independent rocking movement with relation to shaft 523and the lower order portion of wheels l3a may therefore be resetindependently of the higher order portion of wheels l3a. However, whenshaft 524 is adjusted leftwardly from the position shown, its left endwill enter the square recess 529 of coupling 521 and be connected forrotation with shaft 523. In this position, it will be seen that if shaft523 is rocked to reset the higher order portion of wheels 13a, shaft 524will likewise be rocked to reset the lower order portion of wheels Toprovide a dlsengageable driving connection between splined shaft 25(Fig. 6) and adjustable shaft 524, a segmental gear 532, having a squareopening extending axially through its hub portion to permit the passageof shaft 524, is j ournalled in a pair of the partition plates 525. Thatis, the hub portion projects from the opposite sides of gear 532 and issuitably journalled in the respective partition plates 525 which alsoact to restrain the gear from lateral movement during adjustment ofshaft 524.

As heretofore noted, shaft 524 is provided with a reduced cylindricalportion 524'. When shaft 524 is uncoupled from shaft 523 as shown inFig. 6, the reduced portion 524 is positioned adjacent and to the rightof gear 532 and its square portion extended through the square openingof the gear hub to establish a driving connection whereby the gear willbe effective to rock the shaft. If, however, shaft 524 is adjusted tothe left, thereby coupling it with shaft 523, its reduced cylindricalportion 524' will be moved into registration with the square opening inthe hub of gear 532, thereby uncoupling the drive by permitting idlerotation of the gear. Meshing with segmental gear 532 and splined onshaft 253 is a segmental gear 533 which is also restrained from lateralmovement by partition plates 525. Therefore, when shaft 20 is rockedupon a resetting operation for the sub-total register, gear 533 will beefiective to drive gear 532.

It will be seen, therefore, that if shaft 524 is adjusted to positionwherein it is uncoupled from shaft 523 and coupled with gear 532, aresetting operation for the lower order wheels lfia of the grand-totalregister will be effected in conjunction with a resetting operation forthe ub-tot l register. Thus, the accumulation in the grandtotal registerwill comprise only the sum of th individual registrations in the higherorder portion of wheels l3a. However, with shaft 524 sential tocompletely reset boththe grand=total register and the sub-totalregister: Tothi'sien'd;

normally disengaged" driving means :is provided for connecting shaft 523with 'spIined'shaft'ZBi Such means includes "a segmental gear 534' faston'shaft 523-and a segmental gear535meshing with gear 534 and mounted"onsplinedshaft2t for limited rotationthereoni Gears'534 and 535 aremounted between apair of the partition" plates 525 and areprovidedwithhub "portions having suitable bearings in the'plates: Gear 535 isprovidedwith aninternal tooth 5S5 (F'igi'7) normally. engaging ashoulder 20' formedbymilling 'a transverse slot inthesurface of shaftZD.As clearly shown in Fig. 7, when shaftZflis rocked counterclockwise-andreturn in a resetting operation for the sub-total register, no'movementwill'be transmitted to gear 535 andoonse quently no resetting operationwill be effectedfor higher order portions of grand total .wh'eels 13a.

Manually adjustable means comprisinga clutch- 0 or coupling 53'5 isprovided to connect gear 535' for rocking,movement with-shait 20:Coupling 535 is in the formof'a flanged collar andis splined andslidably mounted on shaft 20-to the" left (Fig. 6) of gear 535;Coupling-536is pro-'- vided with a key 531 seated in a keyway 'in"thehubof the coupling and registering with thespline of shaft 20 slidableth'erein with said coupling on the shaft. The-hub'of'gear 535is pro=vided with a keyway538 for the reception ofkey '40 53'! upon movement ofcoup1ing53B to 'theright (Fig. 6) on shaft 20 'to'therebytransm'ittherocking movement of said shaft to said gear through the coupling. Aslide 539-extending the lengthof carriage 2a and slidably supported atits ends-in the end plates respectivelyof thecarriage ispro vided,adjacent itsleft'end, with a depending, arm 539' engaging coupling 536between its flanges. Adjacent its oppositeend; the slide is providedwith an inclined edge 539a and a-holding edge 53%. Slide 539 isnormallyurged to its leftmost position by a spring 548" (Fig: 6),thereby maintaining coup1ing'535-in disengaged position. A latch 54f(Figs. 6 and 8)' in theform of a two armed lever is rotatably-mounted on55- adjustable shaft 524 and is restrainedfrom -lateral movement by apairof the partiti'on'plates 525,one of which is shown in Fig;8.-

The stem of a key-542 '(Figs l and 8) has suitable pin and slotmounting-on one of the partition plates 525.adjacent latch 551 andextends upwardly through the. cover plate of carriage 2a (Fig. 1).The-stem of. key 5=i2 is provided with a leftwardly extending. arm 542which is positioned to engage one .of the arms of latch. 54tuponde- 5pression of said key. A suitable springattachedto the arm 542" holds thekey-in normal raised position. Upon depressio'nof .key.5 i2; arm 542will engage the upper arm of latch 54! and rotate said latch inclockwise direction in Fig. 8'(counterclockwise direction in Fig. 6).The oppositely disposed arm' of latch 5 is'located beneathand adjacentthe inclined edge 53Sa'of'slide 539; Consequently, upon rotation'ofthe=latch, said oppositely disposed'arm will engage-inclined edge '75539a and-cam slide 539 toward the right as shown" in Fig.1 6 (towardthe'leftin Fig.3); and move coupling 536*to engage the drive forgear.535; At

the 'cornpletion'of "its cammingimovement; the armor latch 545' willengage the holding edge 53% of slide539and thereby. prevent its. retracti'on-"by-spring' 549. From an inspection of Fig. 8" it will be observedthat arm 542 of key 542 may beadaptedfor pivotal connection with the armof latch'1ever'54i in lieu of engagementtherewith. With such anarrangement, key 542:would. re-

main-depressed whenlatch 54A is inslide' latching.

position and 'therebypermit manual retraction'to release-thelatch shouldthe operator unintentionally depress said 'key. Adrive from shaft 25 toshaft 523 will thus 'be estabilshed and therocking.

of shaft was an incident to aresetting operation forthe sub-totalregister "will rock shaft 523to operatethe'resetting mechanism for thehigher. .order portionof wheels [3a ofthegrand total register. If shaft524 is mine adjusted position shown in Fig. 6; a resetting operation forlower orderwheels Ifla will be effected simultaneously With a, resetting"operation for the higher order wheels but through the drivetraincomprising gears 532 and 533: If, however, shaft 524 is adjustedtoward the left (Fig. 6), it will be coupled to shaft 523 and uncoupledfrom gear 532. Therefore; rockingpf'shaft" 52 to clear. higherorder-wheels l3a'will likewise rockshaft "52-45 'and' simultaneouslyclearthe' lower order wheels.

Asheretofore "noted; provision is made to disengage coupling536'automatically upon completionof the resetting'operation soth'atsubsequentv operation of resetting :clutch 454 will the effectiveonly to' reset the sub-total registereither' in'dee pendently orinconjunction with'dower" order wheels [3a of the'grandtotal.registendepjending upon theadjustment of shaft 524: To effect this,

a collar 543 (Fig.8) is fixed-on splined'shaftlfii Collar 543 is cutaway to'provide a'shoul'der' 533.

which underlies alug 54! on latch'54i when said i latch is moved toholding position. Therefore,

when shaft 28 is rocked in theresetting operation; shoulder 543 ofcollar 552%"will engagei'lug5 i'i" of latch" 5-l l thereby moving saidlatoh'fr'o'nren' gagement with holding edge 5391;" ofsIi'de-EEIQ.

This releasingqnovement of collar 543 is eife'cted" before thecompletion offthe resetting movement of "shaft'a 25 and notwherr i saidshaft is "rocked back to nor-malf- StvringfiM-of slide 533*w'ill;however, be ineffective-torestore said slide and disengage coupling 536-unti1 the resetting oper ationis complted as thefriction of-key 53'!inkeyway-538 will prevent the disengaging' move ment-iUpon-reversals?shaft 2G; theirictidn bet-ween the'parts -will 'bereli'eved'andspring 545"" will be effective to restore slide 539 andthereby disengage coupli'ng 536. However. upon th'e-'return movementofshaft 26, shoulder'ZS (Fig: 7) engaging internal tooth-535 ofgear535will be efiectiveto movesaid gear and thepartsdriven thereby tonormal -'posit'ions.

Toeffect the reset-ting operations as described in the foregoing, it isnecessary that theinter mediategears 25 and-=25a in"ca1'riages-*2 and 2arespectively (Fig. 3) be-out-ofmesh withthe respective intermediategears 28*and25d-in thia machine bod-y.- Therefore upon operation ofclutch 464; provision is made to rock carriage-2 upwardly about itsfulcrum on shafts 459-and 1550 at its-rear and to rock'carriage 2aforwardly-about its-fulcrum on shaft 28. The rocking of thecarriagesis-simultaneously effected uponeach' operation of resetting clutch 464by a cam M l-"(Figs- 2 and i) fixed for rotation with the driven memberof said clutch. In normal position the low portion of cam 544 isnormally engaged by an anti-friction roller at the end of an arm 545fast on a shaft which extends across the machine and has suitablebearings in the side frames of the machine. At the beginning of aresetting cycle, cam 544 will rock shaft 546 counterclockwise (Figs. 2and 4) and hold said shaft in rocked position until near the end of thecycle at which time the low portion of the anti-friction roller of arm555 will again engage the low portion of the cam. Fixed on shaft 546adjacent the inner faces respectively of the right and left side framesare a pair of forwardly extending arms 54'! which have link connections548 with a pair of carriage lifters 549 respectively, as shown in dottedlines in Fig. 2. One of the lifters 549 is pivotally mounted at itsforward end on the inner face of the left side frame and extends towardthe rear where it engages the forward edge of carriage 2. The other1ifter 549 (not shown) likewise engages carriage 2 and in like manner ismounted on the right hand side frame. Therefore, when shaft 556 isrocked, links 543 will be raised and likewise raise the rearward ends oflifter 549 and rock carriage 2 upwardly to disengage the intermediategears.

To simultaneously rock carriage 2a, shaft 545 is provided with arearwardly extending arm 550 (Fig. 4) exteriorly of the right side framewhich arm 555 has a link connection 55l (Figs. 4 and 8) with one arm ofa bell crank 552 which is pivotally mounted on the rear framing of themachine. A pair of bell cranks in the form of plates 553 (Fig. 8) arepivotally mounted on the top framing of the machine rearwardly ofcarriage 2a and in spaced relationship adjacent the sides respectivelyof the machine. The rearwardly extending arms of cranks 553 areconnected by a link 554 and the left end of the link is connected to theother arm of bell crank 552. The leftwardly disposed arms of cranks 553are connected by a link 555 which extends across the machine to the rearand adjacent carriage 2a and is provided with a pair of forwardlyextending claws 555a (Figs. 2, 3, and 8) adjacent its ends. Extendingacross the top of carriage 2a at its rear is a plate 556 provided with adownwardly turned rear edge in position for engagement by claws 555a oflink 555.

When shaft 546 is rocked, link 55! will be moved downwardly by arm 550and bell crank 552 (Fig. 8) will be rocked in counterclockwisedirection. Link 555 will therefore be moved to the left and cranks 555rotated in clockwise direction, thereby moving link 555 forwardly andclaws 5550. engaging plate 556 will rock carriage 2a about its pivot onshaft 20 to disengage the intermediate gears. At the end of theresetting cycle, the anti-friction roller on arm 545 (Figs. 2 and 4)will engage the low portion of cam 544 and a spring 551 attached to arm550 will then be effective to rock carriages 2 and 2a back to normal.

Although a particular embodiment of the invention has been shown anddescribed, .it will be understood that its application is not to berestricted to this specific embodiment except as required by the scopeof the appended claims.

I claim:

1. In a motor operated calculating machine having a pair of registersand individual resetting mechanisms for each of said registers; drivemeans for operating one of said register pling to disconnected position,a manually operresetting mechanisms, a power transmission trainincluding a coupling adjustable to connect or disconnect the otherresetting mechanism with said drive means, spring means for urging saidcoupling to disconnected position, a manually operable member forcausing adjustment of said coupling to connected position, a latch forholding said coupling in connected position against the tension of saidspring means and a member operable by said power transmission train forreleasing said latch.

2. In a motor operated calculating machine having a pair of registersand individual resetting mechanisms for each of said registers; drivemeans for operating one of said register resetting mechanisms, a powertransmission train including a coupling adjustable to connect ordisconnect the other resetting mechanism with said drive means, springmeans for urging said coupling to disconnected position, a latchingmember operable to move to and then to hold said coupling in connectedposition against the tension of said spring means, a manually operablemember for effecting the aforesaid operation of said latching member anda member operable by said power transmission train for moving saidlatching member from holding position.

3. In a motor operated calculating machine having a pair of registersand individual resetting mechanisms for each of said registers; drivemeans for operating one of said register resetting mechanisms, a powertransmission train including a coupling adjustable to connect ordisconnect the other resetting mechanism with said drive means, springmeans for urging said coupling to disconnected position, a slide havingan operating connection with said coupling; said slide having aninclined edge and a holding edge, latching means operable to engage saidinclined edge thereby camming said slide to adjust said coupling toconnected position and then to engage said holding edge to maintain saidcoupling in connected position against the tension of said spring means,a manually operable member for effecting the aforesaid operation of saidlatching means and a member operable by said power transmission trainfor moving said latching means from holding position.

4. The invention according to claim 3 wherein the power transmissiontrain includes a rockablc shaft on which the adjustable coupling ismounted and the member for moving the latching means from holdingposition is mounted on and rockable with said shaft.

f individual resetting mechanisms for one and for another portionrespectively of the numeral wheel series of said second register, drivemeans for operating the resetting mechanisms for said first register andfor one of said portions of said -second register, a power transmissiontrain including a coupling adjustable to connect or disconnect theresetting mechanism for the other said portion of said second registerwith said drive means, spring means for urging said couable member forcausing adjustment of said coupling to connected position, a latch forholding said coupling in connected position against the tension of saidspring means and a member operable by said power transmission train forreleasing said latch.

6. In a motor operated calculating machine having a first and a secondregister, each comprising a series of numeral wheels; the combinationwith resetting mechanism for said first register, of individualresetting mechanisms for one and for another portion respectively of thenumeral wheel series of said second register, drive means for operatingthe resetting mechanisms for said first register and for one of saidportions of said second register, a power transmission train including acoupling adjustable to connect or disconnect the resetting mechanism forthe other said portion of said second register with said drive means,spring means for urging said coupling to disconnected position, alatching member operable to move to and then to hold said coupling inconnected position against the tension of said spring means, a manuallyoperable member for effecting the aforesaid operation of said latchingmember and a member operable by said power transmission train for movingsaid latching member from holding position.

7. In a motor operated calculating machine having a first and a secondregister, each comprising a series of numeral wheels; the combinationwith resetting mechanism for said first register, of individualresetting mechanisms for one and for another portion respectively of thenumeral wheel series of said second register, drive means for operatingthe resetting mechanism for said first register, a drive train fordelivering power from said drive means, a power transmission foroperating the resetting mechanism for one of said portions of saidsecond register, a clutch for connecting said power transmission withsaid drive train, a manually operable member for causing the engagementof said clutch, a member operable by said drive train to disengage saidclutch, and a power transmission for operating the resetting mechanismfor the other said portion of said second register including manuallyadjustable couplings for connecting said transmission with said otherpower transmission or alternatively with said drive train.

8. In a motor operated calculating machine having a first and a secondregister, each comprising a series of numeral Wheels; the combinationwith resetting mechanism for said first register, of individualresetting mechanisms for one and for another position respectively ofthe numeral wheel series of said second register, drive means foroperating the resetting mechanism for said first register, a drive trainfor delivering power from said drive means, a power transmission foroperating the resetting mechanism for one of said portions of saidsecond register, a clutch for connecting said power transmission withsaid drive train, a control member movable to engage or disengage saidclutch, spring means for urging said control member to clutchdisengaging position, a manually operable member for moving said controlmember to clutch engaging position, a latch for holding said controlmember in clutch engaging position against the tension of said springmeans, a member operable by said drive train for releasing said latch,and a power transmission for operating the resetting mechanism for theother said portion of said second register including manually adjustablecouplings for connecting said transmission with said other powertransmission or alternatively with said drive train.

9. In a motor operated calculating machine having a first and a secondregister, each comprising a series of numeral wheels; the combinationwith resetting mechanism for said first register, of individualresetting mechanisms for one and for another portion respectively of thenumeral wheel series of said second register, drive means for operatingthe resetting mechanism for said first register, a drive train fordelivering power from said drive means, a power transmission foroperating the resetting mechanism for one of said portions of saidsecond register, a clutch for connecting said power transmission withsaid drive train, a control member movable to engage or disengage saidclutch, spring means for urging said control member to clutchdisengaging position, a latching member operable to move to and then tohold said control member in clutch engaging position against the tensionof said spring means, a manually operable member for efiecting theaforesaid operation of said latching member, a member operable by saiddrive train for moving said latching member from holding position, and apower transmission for operating the resetting mechanism for the othersaid portion of said second register including manually adjustablecouplings for connecting said transmission with said other powertransmission or alternatively with said drive train.

HERMAN GANG.

REFERENCES CITED The following references are of record in the

